PLAN
enables logging of execution plans (short form). Execution plans for procedures are also recorded if logging of procedures
(PROCEDURES) is enabled.

HOSTVARS
enables logging of host variable values. If you specify HOSTVARS, the information listed for SQL is also logged.

PROCEDURES
enables logging of statements executed from within procedures.

TRIGGERS
enables logging of statements executed from within triggers.

OTHER
enables logging of additional request types not included by SQL, such as FETCH and PREFETCH. However, if you specify
OTHER but do not specify SQL, it is the equivalent of specifying SQL+OTHER. Including OTHER can cause the log file to grow
rapidly and could negatively affect server performance.

BLOCKS
enables logging of details showing when a connection is blocked and unblocked on another connection.

REPLACE
at the start of logging, the existing request log is replaced with a new (empty) one of the same name. Otherwise, the
existing request log is opened and new entries are appended to the end of the file.

ALL
logs all supported information. This setting is equivalent to specifying SQL+PLAN+HOSTVARS+PROCEDURES+TRIGGERS+OTHER+BLOCKS.
This setting can cause the log file to grow rapidly and could negatively affect server performance.

This option should only be used when tracking problems. The information appears in the database server messages window or
is sent to the request log. When you specify multiple values, they are separated with a , or a +.

Once the database server is started, you can change the request log settings to log more or less information using the sa_server_option
system procedure.

You can find the current value of the RequestLogging setting using the following query: